How can we help you today?

Start a new topic
Discussions OpenEVSE Forums OpenEVSE Hardware

OpenEVSE board for juicebox

I am considering buying the new juicebox retrofit board to get myself started in the OpenEVSE world. I have exactly zero experience with OpenEVSE, and some experience with DIY electronics (ESP-home).


Could someone help me figure out, before I jump in:


* Is that board all-inclusive, or is any additional hardware required?

* Is it compatible with a screen, or at least a button?

* Is it pre-flashed, or do I need to get a programmer too? Which one?


Thanks in advance.

100 CommentsSorted by Popular

@Nick Yes you can you can also use home assistant to calculate your external factors and automatically change current. For example you could set the station to use excess solar production.


@Troy v0 is ready we just solder on a bunch of screw terminals to the v1 board. The V0 is an option on the V1 store page.

Is this compatible with the temperature sensor? If so, where would be the best place to mount the temperature sensor in a v2?

I just restarted the unit and get the following, no count on the GFCI error but it is displayed.  

image


image


Fault will go away, but will no longer detect car or change from starting

image




I had a version 2.01 pcb for my Juicebox generation 2. This was set up for three phase operation. I’m trying to use the replacement open evse pcb series 2 version 1.0 but have an ac 230v relay which it doesn’t seem to want to operate. Any ideas please?
Hello! I ordered and installed the board for the grey and purple Enel X JuiceBox. I noticed my Equinox EV said it would not be ready in time the following morning. I checked the web interface and found the charger to be jumping between 6a and 40a. Odd. Car estimated it would need another hour to be charged to 80%. I also noticed there were no temperature readings. Could one be causing the other? I submitted a ticket but no word back yet. Now here we are a few days later and the car says the cord is connected but the charger is not sending power. The web interface shows the car to be plugged in but no power is being delivered. Weird.
I installed mine last night, the instructions were great! Very straight forward. However, my amperage is fluctuating between 6 and 40 during charging. This doesn’t seem normal. The car, Equinox EV, starts charging when it thinks it needs to be done by 0630. Now the car is saying it needs another hour to make it up to 80%. Also, no temperature readings? Could this be the issue? This is a grey and purple Enel X if that helps.
IMG3396.jpeg
IMG3396.jpeg
(317 KB)

Sorry for all the posts - an update.


After I disable the GFCI and Ground test the unit is working as it should.  

Can you suggest why this may be the reason? 

Do you have some suggestions on what I can do to test that the board is working? 

Any reason why it would work okay first and then start showing this fault?

@Troy


Ground Test can be re-enabled. There is a known issue where false positive is detected as the unit loses power when unplugged. It does not affect any functionality.


GFCI Error and GFCI self Test Error are different. GFCI error is an actual ground fault detected. Self test error is the controller tickles the coil before charging to see if it trips on purpose.


Disabling GFCI Test does not disable GFCI it just does not self test GFCI every time before each charge. It is possible the GFCI or test coil came unplugged. We would recommend checking both are securely connected.


The pictures in the instructions seem to show everything swapped around which is sightly odd.


With the board orientated I have it all the connections reach ok except for the pink GFI related connection. Should I cut and extend these wires?


I don't think I can rotate the board as the heavy to-car wires are in the way of the bottom side components.

 

image


Also is there an antenna you recommend using?

Regarding: "Just this weekend I needed to turn down the current and there wasn't a method still working for the original JuiceBox Pro 40" 


All JuiceBoxes including V0 still have the host or access point mode where you can connect directly to the unit via WiFi and get a web page with settings that you can change like the current level. I have an ancient V0 and it still has this feature.  Same with my V1.  It's not a feature that was advertised a lot especially if you used the Mobile App to do everything but it has been there the whole time.

@hmbay

One of the last firmware updates I received on the JuiceBox Pro 40A removed the webserver from AP mode.  When I connect in AP, there isn't anything running like the old days where there was a webserver which allowed adjustment to current.

Both connections are securely connected, I have also changed the stock test wire from one loop to 5 as recommended by your build instructions.


Happy that it is still safe and I can confirm the car charged overnight :)  


I have a question about the "Current Scale" and "current offset".  I know how to change it and can see the effect however to get the readings close to what my car is showing my current scale is set to 83. Do you have a link to explain the calculations around this or do I need to jump into the code.

@hmbay

One of the last firmware updates I received on JuiceBox Pro 40A removed the webserver from AP mode.

@hmbay, v2 is the simpelest and seems to have little variation. We have only had a single report of one connector differance.


v0 has a lot of variation, the v1 board has footprints to solder on screw terminals so it is doable but takes a little more care figuring out what each wire is for.

@Danny Did you replace your LEDs with our LED module? If so the new LED module is color changing like in the Juicebox v2. All three LEDs will change color depending on state.


Green - Ready

Yellow - Connected

Blue - Charging

Red - Error

Purple - Sleeping


We are looking into programming individual LEDs to match the old Juicebox, but some of it provides zero value such as the power LED, If any or all LEDs are on then it should be obvious that here is power. Having the all colors of the Power LEDs match the State significantly improves visibility.

Login or Signup to post a comment
More topics in OpenEVSE Hardware
See all 327 topics